427 research outputs found
Lo scheletro di tursiope del Gabinetto di Storia Naturale presso il Liceo Classico N. Machiavelli di Lucca
Full text linkThe “Gabinetto di Storia Naturale“ in the secondary school “Liceo Classico N. Machiavelli” of Lucca (Tuscany, Italy) stil retains the original structure dating back to 1857 and holds rich collections of minerals, fossils and zoological specimens. Cetaceans are represented by a complete skeleton of Tursiops truncatus (Odontoceti, Delphinidae) mounted and exposed to the public, and two lumbar vertebrae in anatomical connection of a large mysticete. The date and the place of origin of these specimens are unknown
The ontogeny of asymmetry in echolocating whales
No full textAccepted proof of manuscript:
Lanzetti Agnese, Coombs Ellen J., Portela Miguez Roberto, Fernandez Vincent and Goswami Anjali (2022)
The ontogeny of asymmetry in echolocating whales. Proc. R. Soc. B. 289: 20221090
https://doi.org/10.1098/rspb.2022.109
The oldest three-dimensionally preserved vertebrate neurocranium
Full text linkDearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma, Sansom, Ivan J. (2023): The oldest three-dimensionally preserved vertebrate neurocranium. Nature 2023: 1-19, DOI: 10.1038/s41586-023-06538-
New evidence and analyses indicate that Tursiops osennae is a Globicephaline (Odontoceti, Delphinidae) from the Pliocene of Siena Basin (Tuscany, Italy)
No full textTursiops osennae is a species of Delphinidae first described by Simonelli in 1911. It was found in Pliocene sediments (5.33.35 Ma) from the sedimentary basin of Siena- Radicofani in Tuscany, Italy. The holotype consists of an incomplete skull including the ear bones (right periotic and right and left tympanic bulla), a small portion of the left mandible, the atlas articulated with the axis, and the third and fourth cervical vertebrae. The objective of this study was to redescribe this fossil specimen and evaluate its phylogenetic position using both molecular and morphological data. The morphology of Tursiops oseannae significantly differs from extant Tursiops spp. and from all other extant and fossil delphinids, indicating that it belongs to a new genus. Key diagnostic characters that identify this new taxon are: (1) broad rostrum; (2) very wide anterior angle between nasals; (3) very short orbit compared to skull length; (4) deep and narrow antorbital notches; (5) tilted posterior process of periodic; (6) tall atlas, with a long neural spine; and (7) little sloping neural spine of atlas. The phylogenetic position of Tursiops oseannae was evaluated using a supermatrix of 19630 characters coded for 45 taxa. The molecular partition is previously published, whereas the morphological partition was developed for the present study. It includes 63 morphological characters, of which 13 are new. The entire supermatrix was analyzed with implied weighting, with the constant k = 3. The single tree from the combined dataset shows T. osennae as nested in the Globicephalinae rather than in Delphininae, where Tursiops is situated. Tursiops osennae is the sister-taxon of Peponocephala electra and its closest fossil relative is Hemisyntrachelus cortesii, which is the sister-group of the clade of Globicephalinae + Steno bredanensis. Thus T. ossenae represents the oldest fossil genus of Globicephalinae, confirming the great diversification of Delphinidae in the Pliocene
Extended Data Fig. 8 in The oldest three-dimensionally preserved vertebrate neurocranium
No full textExtended Data Fig. 8 | Adams consensus result of the parsimony analysis. Adams consensus tree resulting from the parsimony phylogenetic analysis described in the methods.Published as part of Dearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma & Sansom, Ivan J., 2023, The oldest three-dimensionally preserved vertebrate neurocranium, pp. 1-19 in Nature 2023 on page 15, DOI: 10.1038/s41586-023-06538-y, http://zenodo.org/record/836840
Extended Data Fig. 3 in The oldest three-dimensionally preserved vertebrate neurocranium
No full textExtended Data Fig. 3 | Eriptychius PF 1795 tissues in tomographic section. Section of tomogram from the higher resolution scan set in coronal plane showing dermal 'rostral' plates overlying and wrapping cartilage.Published as part of Dearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma & Sansom, Ivan J., 2023, The oldest three-dimensionally preserved vertebrate neurocranium, pp. 1-19 in Nature 2023 on page 10, DOI: 10.1038/s41586-023-06538-y, http://zenodo.org/record/836840
Extended Data Fig. 9 in The oldest three-dimensionally preserved vertebrate neurocranium
No full textExtended Data Fig. 9 | Consensus result of the Bayesian analysis. Majority rule consensus tree resulting from the Bayesian phylogenetic analysis described in the methods.Node values correspond to posterior probabilities.Published as part of Dearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma & Sansom, Ivan J., 2023, The oldest three-dimensionally preserved vertebrate neurocranium, pp. 1-19 in Nature 2023 on page 16, DOI: 10.1038/s41586-023-06538-y, http://zenodo.org/record/836840
Extended Data Fig. 7 in The oldest three-dimensionally preserved vertebrate neurocranium
No full textExtended Data Fig. 7 | Strict consensus result of the parsimony analysis. Strict consensus tree resulting from the parsimony phylogenetic analysis described in the methods.Published as part of <i>Dearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma & Sansom, Ivan J., 2023, The oldest three-dimensionally preserved vertebrate neurocranium, pp. 782-787 in Nature 621</i> on page 14, DOI: 10.1038/s41586-023-06538-y, <a href="http://zenodo.org/record/8368403">http://zenodo.org/record/8368403</a>
Extended Data Fig. 2 in The oldest three-dimensionally preserved vertebrate neurocranium
No full textExtended Data Fig. 2 | Photographs of Eriptychius PF 1795. a, part preserved in matrix contrasting our interpretation with that of Denison8. b, a close up of the front part of the specimen showing the vasculature.c,the part of the specimen preserved in epoxy with d, a close up of the 'rostral plates and e, a close up of the orbital plates.Roman case labels,our interpretation;italics case labels,Denison's interpretation corresponding to figure 2 of ref.8.Published as part of Dearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma & Sansom, Ivan J., 2023, The oldest three-dimensionally preserved vertebrate neurocranium, pp. 1-19 in Nature 2023 on page 9, DOI: 10.1038/s41586-023-06538-y, http://zenodo.org/record/836840
Extended Data Fig. 6 in The oldest three-dimensionally preserved vertebrate neurocranium
No full textExtended Data Fig. 6 | Additional 3D renders of the vascularization of the endocranium of Eriptychius PF 1795. a,b, median dorsal cartilage in (a) dorsal and (b) ventral view;c,d,median ventral cartilage in (c) ventral and (d) dorsal view; e,f,mediolateral cartilages A in (e) dorsal and (f) ventralview;g,mediolateral cartilages B; h,mediolateral cartilages C; i,j left orbital cartilage in (i) dorsal and (j) ventral view;k,l right orbital cartilage in (k) dorsal and (l) ventral view.Colour scheme as in Fig.2.Published as part of Dearden, Richard P., Lanzetti, Agnese, Giles, Sam, Johanson, Zerina, Jones, Andy S., Lautenschlager, Stephan, Randle, Emma & Sansom, Ivan J., 2023, The oldest three-dimensionally preserved vertebrate neurocranium, pp. 1-19 in Nature 2023 on page 13, DOI: 10.1038/s41586-023-06538-y, http://zenodo.org/record/836840
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